What’s Vulnerable › Vulnerabilities

CVE-2026-3228: NextScripts: Social Networks Auto-Poster <= 4.4.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'nxs_fbembed' Shortcode

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-10 · updated 2026-06-17
• Weakness: CWE-79

Description

The NextScripts: Social Networks Auto-Poster plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `[nxs_fbembed]` shortcode in all versions up to, and including, 4.4.6. This is due to insufficient input sanitization and output escaping on the `snapFB` post meta value. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• NextScripts: Social Networks Auto-Poster: through 4.4.6

References

• https://plugins.trac.wordpress.org/browser/social-networks-auto-poster-facebook-twitter-g/tags/4.4.6/inc-cl/fb.php#L581
• https://plugins.trac.wordpress.org/browser/social-networks-auto-poster-facebook-twitter-g/trunk/inc-cl/fb.php#L581
• https://plugins.trac.wordpress.org/changeset/3470727/social-networks-auto-poster-facebook-twitter-g/trunk/inc-cl/fb.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/923c51ba-0ec2-4e32-a86e-404f3fe2ac7c?source=cve

Get alerted when CVE-2026-3228 or the next vulnerability affects your stack